IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i12p9398-d1168798.html
   My bibliography  Save this article

Failure Mechanism of Anti-Dip Layered Soft Rock Slope under Rainfall and Excavation Conditions

Author

Listed:
  • Jun Jia

    (Key Laboratory for Geo-Hazard in Loess Area, Ministry of Natural Resources, Xi’an Center of China Geological Survey, Xi’an 710119, China
    State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China)

  • Xiangjun Pei

    (State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China)

  • Gang Liu

    (Key Laboratory for Geo-Hazard in Loess Area, Ministry of Natural Resources, Xi’an Center of China Geological Survey, Xi’an 710119, China)

  • Guojun Cai

    (State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China)

  • Xiaopeng Guo

    (Key Laboratory for Geo-Hazard in Loess Area, Ministry of Natural Resources, Xi’an Center of China Geological Survey, Xi’an 710119, China)

  • Bo Hong

    (Key Laboratory for Geo-Hazard in Loess Area, Ministry of Natural Resources, Xi’an Center of China Geological Survey, Xi’an 710119, China)

Abstract

The phenomenon of toppling deformation and failure is common in slopes with anti-dip structures, especially in soft metamorphic rock slopes. This paper aims to explore the instability mechanism of anti-dip layered soft metamorphic rock landslides. Taking the slope of a mining area in the southern Qinling Mountains of China as a geological prototype, a large-scale centrifuge model test and a numerical simulation based on the combined finite and discrete element method (FDEM) were performed. The deformation and failure process, failure mode, and failure path of the slope under rainfall and excavation conditions were simulated. The results show that both the physical centrifuge model test and the new numerical model test can simulate the instability process of anti-dip layered soft metamorphic rock slopes, and the phenomena simulated by the two methods are also very close. Rainfall mainly weakens the mechanical properties of rock, while the excavation at the slope toe mainly changes the stress field distribution and provides space for slope deformation, both of which accelerate the instability of the anti-dip soft metamorphic rock slope. The failure process of an anti-dip layered soft rock slope can be described as follows: bending of the rock layer–tensile fracture along the layer–flexural toppling and cracking perpendicular to the rock layer–extension and penetration of the tensile fracture surface–sliding and instability of the slope.

Suggested Citation

  • Jun Jia & Xiangjun Pei & Gang Liu & Guojun Cai & Xiaopeng Guo & Bo Hong, 2023. "Failure Mechanism of Anti-Dip Layered Soft Rock Slope under Rainfall and Excavation Conditions," Sustainability, MDPI, vol. 15(12), pages 1-21, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:12:p:9398-:d:1168798
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/12/9398/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/15/12/9398/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Songlin Li & Qiang Xu & Minggao Tang & Huajin Li & He Yang & Yong Wei, 2020. "Centrifuge Modeling and the Analysis of Ancient Landslides Subjected to Reservoir Water Level Fluctuation," Sustainability, MDPI, vol. 12(5), pages 1-19, March.
    2. Danqing Song & Wanpeng Shi & Chengwen Wang & Lihu Dong & Xin He & Enge Wu & Jianjun Zhao & Runhu Lu, 2023. "Numerical Investigation of a Local Precise Reinforcement Method for Dynamic Stability of Rock Slope under Earthquakes Using Continuum–Discontinuum Element Method," Sustainability, MDPI, vol. 15(3), pages 1-24, January.
    3. Longwei Yang & Yangqing Xu & Luqi Wang & Qiangqiang Jiang, 2023. "Seismic Signal Characteristics and Numerical Modeling Analysis of the Xinmo Landslide," Sustainability, MDPI, vol. 15(7), pages 1-17, March.
    4. Gang Liu & Fengshan Ma & Haijun Zhao & Guang Li & Jiayuan Cao & Jie Guo, 2019. "Study on the Fracture Distribution Law and the Influence of Discrete Fractures on the Stability of Roadway Surrounding Rock in the Sanshandao Coastal Gold Mine, China," Sustainability, MDPI, vol. 11(10), pages 1-17, May.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Wei Cao & Zheng Wan & Wenjing Li, 2023. "Stability of Unsaturated Soil Slope Considering Stratigraphic Uncertainty," Sustainability, MDPI, vol. 15(13), pages 1-24, July.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Jia Liu & Fengshan Ma & Jie Guo & Guang Li & Yewei Song & Yang Wan, 2022. "A Field Study on the Law of Spatiotemporal Development of Rock Movement of Under-Sea Mining, Shandong, China," Sustainability, MDPI, vol. 14(10), pages 1-13, May.
    2. Yong Wei & Qiang Xu & He Yang & Huajin Li & Pinglang Kou, 2020. "Dynamic Behavior and Deposit Features of Debris Avalanche in Model Tests Using High Speed Photogrammetry," Sustainability, MDPI, vol. 12(16), pages 1-18, August.
    3. Chun Li & Huiming Tang & Yankun Wang, 2020. "Study on the Deformation Mechanism of Reservoir Landslides Considering Rheological Properties of the Slip Zone Soil: A Case Study in the Three Gorges Reservoir Region," Sustainability, MDPI, vol. 12(16), pages 1-19, August.
    4. Li Cheng & Qinzheng Wu & Haotian Li & Kexu Chen & Chunlong Wang & Xingquan Liu & Xuelong Li & Jingjing Meng, 2022. "Safety and Protection Measures of Underground Non-Coal Mines with Mining Depth over 800 m: A Case Study in Shandong, China," Sustainability, MDPI, vol. 14(20), pages 1-16, October.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:15:y:2023:i:12:p:9398-:d:1168798. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.